Public session is not displayed

Steps:

1. Create a session for the device.
2. Share a link to a public session.
3. View the public session in the browser.

The map and device location are not displayed correctly for a device's public session.

Errors from the browser console:

Uncaught TypeError: N is null
    <anonymous> main.js:35
    Webpack 3

TypeError: Object(...)() is null
    displayName http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    get http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    evaluate http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    Fn http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    $< http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    _render http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    r http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    get http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    dn http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    mount http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    $mount http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    init http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    m http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    m http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    us http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    _update http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    r http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    get http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    dn http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    mount http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    $mount http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    <anonymous> http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    n http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    <anonymous> http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1
    <anonymous> http://xxx.xxx.xx/apps/user_status/js/user-status-menu.js?v=1e405975-91:1

Uncaught EvalError: call to Function() blocked by CSP
    z http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    exports http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    a http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    exports http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    exports http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    exports http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    <anonymous> http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    e http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    <anonymous> http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    e http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    <anonymous> http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    <anonymous> http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    n http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:1
    <anonymous> http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:15
    n http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:1
    <anonymous> http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:1
    <anonymous> http://xxx.xxx.xx/apps/phonetrack/js/phonetrack.js?v=1e405975-91:1
phonetrack.js:15:131217
Content Security Policy: Ustawienia strony zablokowały wczytanie zasobu „eval” („script-src”).

App:

Nextcloud 20.0.0 RC2

PhoneTrack 0.6.5

Firefox 81.0